The implementation of the Restriction Hazardous Substances (RoHS) European Union (EU) Directive in 2005 resulted introduction pure tin as an acceptable surface finish for printed circuit boards and component terminations. A drawback finishes is potential to form whiskers. Tin whiskers are a metallurgical phenomenon that associated with rich/pure materials has been topic intense industry interes...

INTRODUCTION In dynamic imaging it is often beneficial to enforce both temporal and spatial sparsity to minimize the number of sparse coefficients required to represent the object (1,2). In general, the minimum number of K-Space samples required to produce good results in sparse reconstruction is approximately four times the number of sparse coefficients (3). Patient motion that is periodic or ...

The ability of rats to use their whiskers for fine tactile discrimination rivals that of humans using their fingertips. Rats perform discriminations rapidly and accurately while palpating the environment with their whiskers. This suggests that whisker deflections produce a robust and reliable neural code. Whisker primary afferents respond with highly reproducible temporal spike patterns to tran...

C is the second most important natural polymer in the nature after cellulose. The main sources of the chitin compounds are shrimp and crabs.Our objective is to discuss the state of the art on extraction of nano chitin whiskers and Chitin based nanocomposites using different type of polymer matrixes. This review manly focuses on the preparation, characterization, properties, morphologies and che...

We deal with a perturbation of a hyperbolic integrable Hamiltonian system with n + 1 degrees of freedom. The integrable system is assumed to have n-dimensional hyperbolic invariant tori with coincident whiskers (separatrices). Following Eliasson, we use a geometric approach that takes advantage of the Lagrangian properties of the whiskers, to show that the splitting distance between the perturb...

Rodents in their natural environment use their whiskers to distinguish between surfaces having subtly different textures and shapes. They do so by actively sweeping their whiskers across surfaces in a rhythmic motion. To determine how textures are transformed into vibration signals in whiskers and how these vibrations are expressed in neuronal discharges, we induced active whisking in anaesthet...